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J. REGKENDORPER & J C. RICHARDS.

ENVELOPE.

No. 32,813. Patented July 9, 1861,

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UNITED STATES PATENT FICE.

JOSEPH REOKENDORFER AND J. G. RICHARD, OF NEW YORK, N. Y.

ENVELOP.

Specification of Letters Patent No. 32,813, dated July 9, 1861.

To all whom it may concern:

Be it known that we, JOSEPH RECKEN? DORFER, of the city and county ofNew York, in the State of New York, and JOHN C. RICHARD, of Brooklyn, inthe county of Kings, in the same State, have invented a certain new anduseful Improvement in Self-Sealing Envelops for Letters and the Like;and we do hereby declare that the following is a full and exactdescription of the same, reference being had to the accompanyingdrawings, in which- Figure 1 is a view of the back of the envelopsealed; Fig. 2 a cross section of the same on line S, S; Fig. 3 a Viewof the back of the envelop broken open; Fig. i a cross section of thesame on line 8, s. The blue lines show the flap in another position.

Similar letters of reference indicate like parts in all the drawings.

To enable others skilled in the art to make and use our invention wewill proceed to describe its construction and operation by the aid ofthe drawings.

A is the flap, and B the corresponding portion which is folded toward itfrom the opposite edge of the envelop.

C and D are-the parts folded from the ends and are made of such lengthas to meet and lap upon each other, as shown in dotted lines. C and Dare firmly gummed together and the edges of B are gummed thereon.

Two horizontal slits E, F, are produced in the part B by suitable meansprevious to the folding of the envelop. The intervening part G forms theloop above referred to, and care is taken that this part is not gummeddown, but is adapted to freely receive the flap A, which whenintroduced, stands in both E and F as represented; a portion beingconcealed under the loop G. The back or outside of A, is gummed asrepresented in red at I, to correspond with the position of G whenintroduced under the same.

To use our envelop the gum I is wetted, and the point of the flap Apassed inward through E, and outward through F. The loop G is nowpressed down upon the body of the letter, and the sealing is complete,

holding the parts with sufficient strength for all purposes, and withall the safety ordinarily obtained. 0n opening our envelop the recipientof the letter has simply to seize the protruding end of A, and onpulling it with sufiicient force the loops Gr tear across at both endsand the envelop is left permanently marked with the fact that it hasbeen opened, by the fractures along those lines but in a very neat andconvenient condition for its legitimate preservation and use. The effectwill be the same if the under side of the loop G is gummed, instead ofthe outer side of A, but in the use of such an envelop the moisture isapplied thereto less directly when A is wet-ted and introduced.

V'Ve can if we choose omit the slit E, and make the whole of B above theslit F serve as the loop G, and thereby produce an effect equivalent tothat before described but in a less perfect degree.

Envelops and other articles have been previously made, in which partswere tucked through apertures, in connection with adhesive appliances,but we are not aware that any have before been made in which the gum hasbeen made to act between the outer surface of the flap A, and the innersurface of a loop G, so as to present the end of A to be pulled onopening the letter and to insure a tearing across of the small parts atthe ends of the loop G, and permanently record the opening, withoutdefacing the envelop but in the very slight degree which is obvious.

Having now fully described our invention what we claim as new thereinand desire to secure by Letters Patent, is-

The improved self-sealing envelop looped and gummed in the manner abovedescribed so as to possess the advantages herein set forth.

In testimony whereof we have hereunto set our hands in the presence oftwo subscribing witnesses.

J OS. RECKENDORFER. JOHN C. RICHARD. Witnesses:

THOMAS D. Srnrson, G. H. BABCOGK.

